Statistics

For each of the subsequent situations indicate the appropriate measure, incidence rate or prevalence rate as well as the numerical value of the rate?

a) Over a 10 year period 1199719 patients had initial bypass surgery. Of those patients 899719 returned for further surgical procedures related to initial bypass within one year of their original bypass surgery. describe which is the appropriate measure incidence rate or prevalence rate? describe what is the numerical value of the rate?

b. A screening team tested 772 individuals who were between 52 to 85 years of age for cataracts. Of these individuals tested 32 were determined to have cataracts at the time of the screening

Hint to solve the problem- The base is either 1, 10, 100, 1,000, 10, 000, 100, 000, 1, 000, 000 1, 000, 000, 000. Try to usage a base that will leave at least one none zero number on the left side of the decimal point

Use the MATLAB randn function to create a Gaussian distributed random variable Y . Repeat this procedure and form a new random variable X . Finally, form a random variable according to Repeat this procedure many times t ...

A random variable has a moment-generating function given by (a) Find the PDF of the random variable. (b) Use the moment-generating function to find an expression for the k th moment of the random variable.

The probability that a pharmaceutical firm will successfully develop a new drug that will return $750 million dollars is 0.14. If the research is unsuccessful, the company incurs a cost of $100 million dollars. What is t ...

Suppose the power line in the previous problem has an impulse response that may be approximated by (a) What does the shot noise on the power line look like? Sketch a possible member function of the shot noise process. ( ...

Scenario Analysis: Computer Chips - use analysis guidelines in helping (let me know if more information is needed, but this is all we are given) A manufacturer of computer chips has a computer hardware company as its lar ...

The amount of time university professors devote to their jobs per week is normally distributed with a mean of 52 hours and a standard deviation of 6 hours. 1. What is the probability that a professor selected at random w ...

Suppose we modify the communications network as shown in the diagram by adding a link from node B to node D. Assuming each link is available with probability independent of any other link, what is the probability of bein ...

After the Civil War, women were denied any real political voice. And by that I mean they were still denied the right to vote. How did women express their political voice in the Gilded Age and the era in which Populism em ...

Application of t Tests Identify a research question from your professional life or career specialization that can be addressed by an independent samples t test. Indicate why a t test would be the appropriate analys ...

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